The meeting of the quiet Helen North and the charismatic Carla on a beautiful Greek island leads to tragic consequences.
When Helen North (Lesley Sharp) arrives on a beautiful Greek island she is looking forward to a quiet fortnight in the sun. But then she meets the charismatic Carla (Helen McCrory) whose infectious sense of fun proves irresistible. As an intense intimacy grows between them, the two women begin to play a game of fantasy, sharing dreams, desires and dark secrets. When they pick up two young men, sexual jealousy rears its head, and the trust between the two friends is irrevocably damaged. A vicious fight ends with a tragic accident, and leaves Helen returning home to a waking nightmare of guilt and fear.